No-fives subgroup temperaments: Difference between revisions
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[[Badness]] (Sintel): 0.0454 | [[Badness]] (Sintel): 0.0454 | ||
=== Boethian === | |||
Boethian is a [[5L 2s|diatonic-based]] temperament that makes [[513/512]] vanish, so that the major third (C–E) is ~[[24/19]] and the minor third (C–E♭) is ~[[19/16]]. As such, it functions as a 2.3.19-subgroup analogue of [[meantone]], though the small size of the comma puts it at [[schismic]] level of accuracy. In particular, the equal temperaments in the tuning spectrum up to 1/2-comma (flattened) boethian temperament (very close to [[12edo]]) are included in the schismic tuning spectrum in the 5-limit, so boethian intersects with schismic in the prime-5 infill extension thereof, called [[nestoria]], which also tempers out [[361/360]], the difference between 19/18 and 20/19 or between 19/15 and 24/19. | |||
[[Subgroup]]: 2.3.19 | |||
[[Comma list]]: 513/512 | |||
{{Mapping|legend=2| 1 0 9 | 0 1 -3 }} | |||
: mapping generators: ~2, ~3 | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~2 = 1200.2498{{c}}, ~3/2 = 701.4958{{c}} | |||
: [[error map]]: {{val| +0.250 -0.209 -0.501 }} | |||
* [[CWE]]: ~2 = 1200.0000{{c}}, ~3/2 = 701.3445{{c}} | |||
: error map: {{val| 0.000 -0.610 -1.547 }} | |||
{{Optimal ET sequence|legend=1| 5, 7, 12, 41, 53, 65, 77, 219, 296, 1557bhhhh, 1853bhhhh }} | |||
[[Badness]] (Sintel): 0.0294 | |||
=== Dog === | === Dog === | ||
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[[Badness]] (Sintel): 0.491 | [[Badness]] (Sintel): 0.491 | ||
=== Lipsett === | === Lipsett === | ||